CVE-2016-7911
published 2016-11-16CVE-2016-7911: Race condition in the get_task_ioprio function in block/ioprio.c in the Linux kernel before 4.6.6 allows local users to gain privileges or cause a denial of…
PriorityP337high7.8CVSS 3.1
AVLACLPRNUIRSUCHIHAH
EPSS
1.54%
72.4th percentile
Race condition in the get_task_ioprio function in block/ioprio.c in the Linux kernel before 4.6.6 allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted ioprio_get system call.
Affected
15 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 4.7.2-1 (bookworm) | linux 4.7.2-1 (bookworm) |
| android | — | — | |
| linux | linux_kernel | < 3.2.85 | 3.2.85 |
| linux | linux_kernel | >= 0 < 4.7.2-1 | 4.7.2-1 |
| linux | linux_kernel | >= 0 < 4.7.2-1 | 4.7.2-1 |
| linux | linux_kernel | >= 0 < 4.7.2-1 | 4.7.2-1 |
| linux | linux_kernel | >= 0 < 4.7.2-1 | 4.7.2-1 |
| linux | linux_kernel | >= 0 < 3.13.0-110.157 | 3.13.0-110.157 |
| linux | linux_kernel | >= 3.11 < 3.12.70 | 3.12.70 |
| linux | linux_kernel | >= 3.13 < 3.16.37 | 3.16.37 |
| linux | linux_kernel | >= 3.17 < 3.18.38 | 3.18.38 |
| linux | linux_kernel | >= 3.19 < 4.1.29 | 4.1.29 |
| linux | linux_kernel | >= 3.3 < 3.10.107 | 3.10.107 |
| linux | linux_kernel | >= 4.2 < 4.4.17 | 4.4.17 |
| linux | linux_kernel | >= 4.5 < 4.6.6 | 4.6.6 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.09.3CRITICALAV:N/AC:M/Au:N/C:C/I:C/A:C
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
vendor_ubuntu7.8HIGH
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Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2017-02-22·CVSS 7.8
CVE-2016-7910 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the kernel.
It was discovered that a use-after-free vulnerability existed in the block
device layer of the Linux kernel. A local attacker could use this to cause
a denial of service (system crash) or possibly gain administrative
privileges. (CVE-2016-7910)
Dmitry Vyukov discovered a use-after-free vulnerability in the
sys_ioprio_get() function in the Linux kernel. A local attacker could use
this to cause a denial of service (system crash) or possibly gain
administrative privileges. (CVE-2016-7911)
Andrey Konovalov discovered a use-after-free vulnerability in the DCCP
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly gain administra
Ubuntu
Linux kernel (Trusty HWE) vulnerabilities
vendor_ubuntu·2017-02-22·CVSS 7.8
CVE-2016-7910 [HIGH] Linux kernel (Trusty HWE) vulnerabilities
Title: Linux kernel (Trusty HWE) vulnerabilities
Summary: Several security issues were fixed in the kernel.
USN-3207-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 14.04 LTS for Ubuntu
12.04 LTS.
It was discovered that a use-after-free vulnerability existed in the block
device layer of the Linux kernel. A local attacker could use this to cause
a denial of service (system crash) or possibly gain administrative
privileges. (CVE-2016-7910)
Dmitry Vyukov discovered a use-after-free vulnerability in the
sys_ioprio_get() function in the Linux kernel. A local attacker could use
this to cause a denial of service (system crash) or possibly gain
administrative privileges.
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2017-02-22·CVSS 7.8
CVE-2016-7910 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the kernel.
It was discovered that a use-after-free vulnerability existed in the block
device layer of the Linux kernel. A local attacker could use this to cause
a denial of service (system crash) or possibly gain administrative
privileges. (CVE-2016-7910)
Dmitry Vyukov discovered a use-after-free vulnerability in the
sys_ioprio_get() function in the Linux kernel. A local attacker could
use this to cause a denial of service (system crash) or possibly gain
administrative privileges. (CVE-2016-7911)
Andrey Konovalov discovered a use-after-free vulnerability in the DCCP
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly gain administra
Android
CVE-2016-7911: Android Security Bulletin 2016-11-01
CVE: CVE-2016-7911
Severity: CRITICAL
References: A-30946378
Upstream
kernel
vendor_android·2016-11-01·CVSS 7.8
CVE-2016-7911 [HIGH] CVE-2016-7911: Android Security Bulletin 2016-11-01
CVE: CVE-2016-7911
Severity: CRITICAL
References: A-30946378
Upstream
kernel
Android Security Bulletin 2016-11-01
CVE: CVE-2016-7911
Severity: CRITICAL
References: A-30946378
Upstream
kernel
Red Hat
kernel: Use after free in sys_ioprio_get()
vendor_redhat·2016-07-01·CVSS 7.8
CVE-2016-7911 [HIGH] CWE-416 kernel: Use after free in sys_ioprio_get()
kernel: Use after free in sys_ioprio_get()
Race condition in the get_task_ioprio function in block/ioprio.c in the Linux kernel before 4.6.6 allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted ioprio_get system call.
A use-after-free vulnerability in sys_ioprio_get() was found due to get_task_ioprio() accessing the task->io_context without holding the task lock and could potentially race with exit_io_context(), leading to a use-after-free.
Statement: This issue affects the versions of the Linux kernel as shipped with
Red Hat Enterprise Linux 6, 7 and Red Hat Enterprise MRG 2. Future kernel
updates for Red Hat Enterprise Linux 6, 7 and Red Hat Enterprise MRG 2 are not planning to be updated to address this issue. If this affects you please lo
Debian
CVE-2016-7911: linux - Race condition in the get_task_ioprio function in block/ioprio.c in the Linux ke...
vendor_debian·2016·CVSS 7.8
CVE-2016-7911 [HIGH] CVE-2016-7911: linux - Race condition in the get_task_ioprio function in block/ioprio.c in the Linux ke...
Race condition in the get_task_ioprio function in block/ioprio.c in the Linux kernel before 4.6.6 allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted ioprio_get system call.
Scope: local
bookworm: resolved (fixed in 4.7.2-1)
bullseye: resolved (fixed in 4.7.2-1)
forky: resolved (fixed in 4.7.2-1)
sid: resolved (fixed in 4.7.2-1)
trixie: resolved (fixed in 4.7.2-1)
GHSA
GHSA-gmgw-5477-j5f7: Race condition in the get_task_ioprio function in block/ioprio
ghsa_unreviewed·2022-05-17
CVE-2016-7911 [HIGH] CWE-362 GHSA-gmgw-5477-j5f7: Race condition in the get_task_ioprio function in block/ioprio
Race condition in the get_task_ioprio function in block/ioprio.c in the Linux kernel before 4.6.6 allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted ioprio_get system call.
OSV
linux vulnerabilities
osv·2017-02-22·CVSS 7.8
CVE-2016-7910 [HIGH] linux vulnerabilities
linux vulnerabilities
It was discovered that a use-after-free vulnerability existed in the block
device layer of the Linux kernel. A local attacker could use this to cause
a denial of service (system crash) or possibly gain administrative
privileges. (CVE-2016-7910)
Dmitry Vyukov discovered a use-after-free vulnerability in the
sys_ioprio_get() function in the Linux kernel. A local attacker could use
this to cause a denial of service (system crash) or possibly gain
administrative privileges. (CVE-2016-7911)
Andrey Konovalov discovered a use-after-free vulnerability in the DCCP
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly gain administrative
privileges. (CVE-2017-6074)
OSV
CVE-2016-7911: Race condition in the get_task_ioprio function in block/ioprio
osv·2016-11-16·CVSS 7.8
CVE-2016-7911 [HIGH] CVE-2016-7911: Race condition in the get_task_ioprio function in block/ioprio
Race condition in the get_task_ioprio function in block/ioprio.c in the Linux kernel before 4.6.6 allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted ioprio_get system call.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2016-7911 kernel: Use after free in sys_ioprio_get() [fedora-all]
bugzilla·2017-02-01·CVSS 7.8
CVE-2016-7911 [HIGH] CVE-2016-7911 kernel: Use after free in sys_ioprio_get() [fedora-all]
CVE-2016-7911 kernel: Use after free in sys_ioprio_get() [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions of Fedora.
Bugzilla
CVE-2016-7911 kernel: Use after free in sys_ioprio_get()
bugzilla·2016-11-29·CVSS 7.8
CVE-2016-7911 [HIGH] CVE-2016-7911 kernel: Use after free in sys_ioprio_get()
CVE-2016-7911 kernel: Use after free in sys_ioprio_get()
A use after free vulnerability in sys_ioprio_get() was found due to get_task_ioprio() accessing the task->io_context without holding the task lock and could potentially race with exit_io_context(), leading to a use-after-free.
At this time this use-after free is believed to be limited to a kernel panic via NULL pointer dreference of p->io_context->ioprio and does not lead to memory corruption or privilege escalation. The page that is used after free may be controlled by an attacker and lead to further information leaks.
Upstream patch:
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=8ba8682107ee2ca3347354e018865d8e1967c5f4
Initial public release:
http://source.android.com/security/bulletin/2016-11
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8ba8682107ee2ca3347354e018865d8e1967c5f4http://source.android.com/security/bulletin/2016-11-01.htmlhttp://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.6http://www.securityfocus.com/bid/94135https://github.com/torvalds/linux/commit/8ba8682107ee2ca3347354e018865d8e1967c5f4http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8ba8682107ee2ca3347354e018865d8e1967c5f4http://source.android.com/security/bulletin/2016-11-01.htmlhttp://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.6http://www.securityfocus.com/bid/94135https://github.com/torvalds/linux/commit/8ba8682107ee2ca3347354e018865d8e1967c5f4
2016-11-16
Published